Could a '70s-themed wedding be on the way? Mila Kunis immediately sparked rumors about a possible engagement to beau Ashton Kutcherwhen she stepped out in L.A. on Wednesday, Sept. 4, wearing a simple gold band -- on that finger.

There's one detail that Kutcher needs to work out if he and Kunis ever walk down the aisle: finalizing his divorce from Demi Moore. The Jobsactor filed for divorce fromMoore, 50, in December 2012 after six years of marriage. They previously announced their split a month earlier.